Shock-absorbent mounting



Jan. 1, 1946. E. J. LOMBARDI y SHOCK ABSORBENT MOUNTING Filed May 24,1943 3 Sheets-Sheet l IN V EN TOR. EUGENE J.' l OMBHIPD/ ATTOI? EY Jan.l, 1946. E. J. LoMBARDl SHOCK ABSORBENT MOUNTING File@ May 24, 1943 ssheets-sheet 2 v INVENTOR. fl/Gf'lvf J' MBRD/ I BY* AZ! A7701? Y Jan. l,1946. E, .1 LOMBARDI 2,391,909

SHOCK ABSORBENT MOUNTING Filed May 24, 1943 5 Sheets-Sheet 3y'cushioning of the oscilloscope. v-larly so sincethe permissibledisplacement ofthe Patented Jan. l, 1946 signor vto Federalr'lelephone'and Radio Corporation, Newark, N. J., a corporationlof 'DelafareAppiisaenfnaylze, is4sfsriamosifaf1t vConsiderable Vcliiiiculty hasbeen' 'encountered in vdesigning a mounting lfor such an oscilloscopewit-h `'regard -to the particular lconstruction of -its resilientmembers lso as to provide "maximum '-I'hSi'S particu'- oscillos'cope is'also strictly limited. These'resil- '-ient inen'ibers must providecushioning from shocks applied to the vmounting from all fpossibledirections including the vertical. Furthermore, such resilient membersmus'tvbequick'ly demountable-'so that the oscilloscope -can'bedisconnected from the mounting `rwith a minimum of delay Vfor purposesofreplacement orrepair.

Accordingly one object iof the present invention 'is to provide, asapart of almountin'g'fo'r ran'oscilloscope yor othersimilar instrument,rey silient supports that 'will' absorb shocks received by the mountingfrom any=- direction.

A yfurther object of the inventionistoprovide means whereby any portionofthe oscilloscopefor similar assembly may be easily reached yforadjustment or repair Withoutthenecessityofreev moving the assembly'fromthefmountin'g.

An additional object -of the inventionistoe'provide a pivotedshock-absorbent support for -an electrical apparatus so that thepositionbf the apparatus in the mounting may be altered Withoutdisconnecting th'epivoted support.

Another object of the invention is `to reduce oscillation effectsbetween -an electrical 'assembly Vand itsmounting by positioning all' oftheres'ilientsupports for thefa'ssembly inthe sameplahe.

yjSftill another object of 'the' inventionisto provide, in 4a mounting`for 'electrical apparatus, re'- silient supporting members for Ethe"apparatus which are readily demountable to"pe`rmit 'rapid disconnectionof the apparatusfrm 'the mounting.

Further objects and advantages of the'in'ven- :tion v vill be apparentfromlthe jfollovving description of anembodiment of-one form oftheinventionaiid fromtle "accompanying drawings, in Which;

Fig. *1 "is ta view f 'a mounting-:Sadam royan oscilloscope 'assembly inaccordance 'with 'the present invention, also showing the as'smldly'jinUlillihea moving the nuts 8A securing the bracket supports I8 to theplates 9B, the upper part of the saddle 6 can be disconnected from theframework 9, and if the pins I2 are also removed the saddle 6 can belowered to an approximately horizontal position through rotation of thetubular member II. Means such as a chain 8E may be used to limit theextent of such rotation.

Through the above mode of operation, easy access for inspection oradjustment of the oscilloscope assembly 8 can be made withoutdisconnecting the lower brackets I5 or removing the saddle 6 from theframework 9.

Coming now to the particular shock-absorbent features of the invention,Figs. 4 and 5 show detailed views of the resilient mountings of Fig. 2.

Referring first to Fig. 4, the U-shaped bracket I5 is secured by meansof the bolts I6 to the bracket support I8' in turn bolted at I8A to theplate 9B as hereinbefore described.

From Fig. 1 it is seen that each of the two lingers 1 has an opening 1Atherein. One of the fingers 1 is inserted in the U-shaped bracket I5 ofFig. 4 so that the opening 1A in finger 1 is within the bracket.

A cylindrical block of rubber or other resilient material has securelyattached thereto two metal discs and 26, said discs being disposed onopposite faces of the block 28 as shown. Each of these discs has anextending threaded portion 2| and 22 respectively. The portion 22extends through an opening in the bracket I5, and a nut 24 threadablyengaging the portion 22 holds the plate 26 in position relative to thebracket I5. The other extending portion 2| passes through the opening 1Ain finger 1, and a nut 23 threadably engaging the portion 2| holds thefinger 1 in position relative to the disc 25. A ring 28 of rubber orother resilient material encloses the sides of nut 23, and separates thetop of finger 1 from the lower surface of bracket support I8.

A recess 21 above the nut 23 allows for upward movement of the nutrelative to the support I8. A space 29 between the resilient members 20and 28 and the interior walls of bracket I5 and support I8,respectively, allows for any lateral displacement of the resilientmembers with respect to the bracket and support resulting fromhorizontal shocks applied to the block 2U through the bracket I5.

In Fig. 5 is shown the lower mounting of Fig. 2. 'I'he rotatable tubularmember II (which is journalled in the shell III) has rigidly attachedthereto two bracket supports I9 (Fig. 3) Each bracket support I9 has aU-shaped bracket I5' secured thereto by means such as the bolts I6.

A cylindrical block 20 of rubber or other resilient material has twometal discs 25' and 26 attached to the opposite faces thereof, in amanner similar to block 20 of Fig. 4. A threaded extending portion 22'on disc 26' extends through an opening in bracket support threadedengagement with an opening in rotatable tube II as shown in Fig. 5. Whenthe disc Z6' is tightened it results vin a rigid positioning ofresilient block 20', disc 26', bracket support I9, and tubular memberII, so that rotation of the last-named member will rotate all of theseelements as a unit. Y

The upper disc 25 on resilient block 20' has an extending threadedportion 2|' passing through one of the openings 1A in fingers 1'. A nut23' threadably engaging the threaded portion 2|' holds the finger 1 inposition relative to the disc 25'. A ring 28' of rubber or otherresilient ma- I9 and into terial encloses the sides of nut 23 andseparates the top of finger 1 from the top inner surface of bracket I5',thus acting to cushion a downward shock applied to the bracket I5. Toallow for the upward displacement of ring 28' due to such a shock, thetop of bracket I5' is partially cut away above the nut 23 as shown at21. A space 29' between the inner side walls of bracket I5' andresilient blocks 20 and 28' allows for the lateral displacement of suchblocks due to horizontal forces applied to the bracket I5'.

Thus it will be seen that the saddle 6 actually iloats on the resilientblocks 20, 20'. No rigid connection exists between the saddle 6 and theframework 9. The four supporting blocks 20, 20 are positioned in thesame plane to minimize oscillatory effects. In addition, downward shocksare cushioned by the supplemental resilient blocks 28, 28'. Furthermorethe supporting elements are simple in design and readily replaceable,while many of the individual parts of the upp'er and lower mountings areinterchangeable.

While I have described above the principles of my invention inconnection with specific apparatus, and particular modications thereof,it is to be clearly understood that this description is made only by wayof example and not as a limitation on the scope of my invention as setforth in the objects of my invention and the accompanying claims.

I claim:

1. In a shock-absorbent device for electrical apparatus, a saddle forthe apparatus, a mounting, a pair of resilient members, a pair ofextendingportions on said saddle, means for respectively supporting oneside of each of said extending portions by said resilient members, apair of brackets respectively partially enclosing said resilientmembers, and a pair of bracket supports rotatably attached to saidmounting and supporting and positioning said brackets and said resilientmembers.

2. In a shock-absorbent device for electrical apparatus, a framework, ashell rigidly secured to said framework and having an opening therein, atubular member rotatably journalled by said shell and having an openingtherein, a bracket support rigidly attached to said tubular member,aresilient member supported by said bracket support, and a bolt removablyinsertable through the openings of said shell and said tubular member toselectively control the rotation of said tubular member with respect tosaid shell.

3. A device according to claim 2, further comprising a saddle for theapparatus, and an extending portion on said saddle designed to besupported by said resilient member.

4. A device according to claim 2, further comprising a saddle for theapparatus, an extending portion on said saddle supported on one side bysaid resilient member, a bracket secured to said bracket support andpartially enclosing said resilient member, and a second resilient memberwithin said bracket, on the opposite side of said extending portion fromsaid first mentioned resilient member, and between said extendingportion and the inner wall of said bracket extending parallel to saidbracket support.

5. In a device for protecting an apparatus from shocks, a mountinghaving a threaded opening therein, a' bracket support supported by saidmounting, said bracket support having an opening therein, aV resilientmember on said bracket support, positioning means attached to saidresilient member and having an extending threaded portion, saidextending threaded portion designed to pass through the opening in saidbracket support to threadably engage the threaded opening of Saidmounting, an extending portion on said apparatus having an openingtherein, a second positioning means attachedto said resilient member andoppositely disposed to said firstmentioned positioning means, saidsecond positioning means having an extending threaded portion, saidextending threaded portion of said second positioning means designed topass through the opening in the extending portion on said apparatus, anda nut threadably engaging the extending threaded portion of said secondpositioning means to position said extending portion on said apparatuswith respect to said second positioning means.

6. A device according to claim wherein said bracket support is rotatablysupported by said mounting.

'7. In a shock-absorbent device for an apparatus, a mounting, a bracketsupport on said mounting, a bracket secured to said support, a resilientmember within said bracket and supported by said bracket, an extendingportion on said apparatus, means for positioning and supporting one sideof said extending portion on said resilient member, a second resilientmember on the opposite side of said extending portion from saidrst-mentioned resilient member and between said extending portion andsaid bracket support, so that selective displacement of said extendingportion With respect to said bracket and said bracket support willcompress one of said resilient members between said extending portionand selectively said bracket and said bracket support, said bracketsupport having a recess therein to permit compression thereinto of aportion of said second resilient member upon selective movement of saidextending portion relative to said bracket and said bracket support.

8. In a shock-absorbent device for electrical apparatus, a mounting, asupporting and housing structure having two elements, a bracket and itssupport, a resilient member secured to one of said elements and withinsaid bracket, an extending portion on said apparatus, means forpositioning one side of said extending portion on said resilient member,and a second resilient member on the opposite side of said extendingportion from said first-mentioned resilient member and within saidstructure, so that selective displacement of said extending portion withrespect to said bracket and said bracket support will compress one ofsaid resilient members between said extending portion and selectivelysaid bracket and said bracket support.

9. A device according to claim 8, comprising additional selectivelyadjustable means forpositioning the bracket support relative to saidmounting, so that said adjustable means may be maintained in fixedcondition during desired periods and maintained in adjustable conditionduring other desired periods.

10. In a shock-absorbent device for electrical apparatus, a mounting,two pairs of resilient members on said mounting for supporting saidapparatus, one of said pairs of resilient members being demountablyattached to the upper portion of said mounting, and the other of saidpairs of resilient members being rotatably attached to the lower portionof said mounting, both of said pairs of resilient members beinggenerally rectangularlyv disposed in the same plane.

11. In a shock-absorbent device, a saddle for the apparatus to becarried and provided with extending portions, mounting units eachincluding as elements a bracket and a support therefor,a resilientmember carried by one of said elements and within the bracket, meanswhereby one side of each extending portion is carried by said resilientmember, anda second resilient member within each unit and positionedbetween the opposite side of the said extending portion and the other ofsaid elements.

EUGENE J. LOMBARDI.

